Edwin l



(No Model.)

B. L. GILES.

TRACK FOR STORE SERVICE APPARATUS. No. 303,505.

Patented Aug. 12, 1884.

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Unrrn ra'rns ATENT rrrcno EINVIN L. GILES, OF LOWVELL, MASSACHUSETTS,ASSIGNOR TO THE LAMSO N CASH RAILWVAY COMPANY.

TRACK FOR STORE=SERVICE APPARATUS.

SPECIPICATIQN forming part of Letters Patent No. 303,505, dated August12, 1884.

Application filed June 25, 1884. (No model.)

To all whom it may concern:

Be it known that I, EDWIN L. GILES, acitizen of the United States,residing at Lowell, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inTracks for Store-Service Apparatus, of which the following is aspecification.

My invention relates to that class of storeservice apparatus in whichrolling carriers are employed, and has for its object to prevent thederailment of the carriers when passing around curves in the track underrapid motion; and this object I effect by spreading the rails of thecurved portions of the track at the center portions of the curves, asfully described hereinafter, and as illustrated in the accompanyingdrawings, in which Figure 1 is a plan of a curve of the track of astore-service apparatus, and Fig. 2 is a transverse section on the line1 2, Fig. 1.

In that class of storeservice apparatus in which the track consists oftwo rails it has been common to slightly elevate the outer rail of eachcurved portion of the track for the purpose of preventing the carriersfrom being thrown outward by centrifugal action when passing the curves.This construction effects the desired purpose when the carriers do not 0move with extreme rapidity, but under such circumstances has sometimesproved to be inefficient.

In order that the carriers may be retained upon the curved track,whatever may be the speed of their movements, I employ in each curverails bent to conform to circles of different diameters, and soconnected that the vdistance of the rails apart at the center of thecurve shall be greater than at the ends. Thus in the curved portion ofthe track represented in Fig. 1 the outer rail, A, corresponds to acircle which is less in diameter than the circle to which the innerrail, B, corresponds, thus spreading the rails apart at the center ofthe curve, so that as the carrier moves onward on .5 the curve it willhave a more extended hearing and will sink deeper between the rails,with a corresponding increase in stability and decreased tendency to flyfrom the track.

The rails may be connected by the ordinary 5o cross-bars, t, or mayotherwise be secured in their proper relation to each other, and in mostinstances it will be found preferable to elevate the outer rail inaddition to the spread ing of the tracks.

I clairn 1. A store-service apparatus provided with contiguous railsconstituting tracks for rolling carriers, the said rails being spreadapart toward the curved portions of the track, substantially as and forthe purpose set forth.

2. The combination, in the track of a storeservice apparatus, ofcontiguous rails corre sponding to curves having different centers, andarranged farther apart at the centers than 6 at the ends of the curve,for the purpose specified.

3. The combination, in the curved portion of a track of a store-serviceapparatus, of rails spread apart at the center, the outer rail be- 0 ingelevated, substantially as set forth.

L. The combination, with the rails A and B of different curves, ofconnecting cross-bars at the ends, and one or more intermediatecrossbars constructed to maintain the outer rail in 7 5 a higherposition than the inner one and a greater distance between the rails atthe centers than at the ends, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWIN L. GILES.

Witnesses:

CHAS. A. Cox, E. F. ENDIOOTT.

